Lamp-focusing device



Aug. 3, 1926; 1,594,360

H. C. FOSTER LAMP FOCUS ING DEVICE Filed April 5. 1926 IN VEN TOR.

flak/z) C. FasrE/Z.

A TTORNEYS.

=of, and means connected with said bulloreceiving socket for adjusting the bulb sub stantially in a plane perpendicular thereto.

4. The combination with a lamp casing, and a reflector, of a focusin device having an extension socketv slidab y mounted in said casing, the forward end of said socket being provided with oppositely positioned substantiall circular openings in the sides thereof, a ulb-receiving socket extending through said reflector, a pair of substantially circularears extending rearwardly therefrom so as to engage in said openings and pivotally connect said sockets together, a bulb in said last-mentioned socket, means for causing both of said sockets to bodily move longitudinally thereof, and a second means for tilting said bulb about the center of rotation of said ears.

5. The combination with a lamp casing, a

reflector, and a lamp bulb, of a tocusin r' device including an extension socket sli ably mounted in said casing, a bulb-receiving socket ivotally connected to said connecting soc st and in alignment therewith,

a screw member accessible for adjustment from without the casing connected with one of said sockets for bodily moving them longitudinally for adjusting the bulb longitudinaily thereof, and a second screw exposed externally of said casing in enga ement with said bulb-receiving socket "or tilting the same with respect to said extension socket and thereby adjusting said bulb substantially in a plane at right angles to said sockets.

6. The combination with a lamp casing, a reflector, and a lamp'bnlb, of a focusing de vice having an extension socket slidably mounted in said casing, the forward end of said socket being provided with oppositely positioned substantially circular openings in the sides thereof, a bulb-receiving socket extending through said reflector, a pair of substantially circular ears extending rear- Wardly therefrom so as to engage in said openings and pivotally connect said sockets together, a bulb in said last-mentioned socket, a screw member accessible for adjustment from without the casing connected 7 with one of said sockets for bodily moving them longitudinally for adjusting the bulb longitudinally thereof, and a second screw exposed externally of said casing in engagement with said bulb-receiving socket fortilting the same with respect to said extension socket and thereby adjusting said bulb substantially in a plane at right angles to said sockets.

In witness whereof, I have hereunto affixed my signature.

RY C. FOSTER; 

